This adapter is equipped with a +15 switching relay The information below is for various Audi models A2 with Symphony radio Navi-Plus MMI system A3 with Symphony radio Navi-Plus MMI system A4 2005 ->: with Chorus-Concert Symphony Navi-Plus MMI system A4 Allroad 2005 ->: with MMi Basic 4 speaker system A4 2007 ->: with MMi Basic 4 - 8 speaker system without navigation A5 with MMi Basic 4 - 8 speaker system without navigation A6 with MMi Basic 4 - 8 speaker system Q7 with MMi Basic 8 speaker system R8 with Chorus system TT without sound system Guarantee : 2 years
